Rename Launcher to Shelf.

ash/wm/panels/panel_layout_manager.h

Index: ash/wm/panels/panel_layout_manager.h
diff --git a/ash/wm/panels/panel_layout_manager.h b/ash/wm/panels/panel_layout_manager.h
index 042d285cb1d60071b4674ad0c5d39ec2aae5224f..71d22d256a65c70a014dd621a81fd80ce461c70e 100644
--- a/ash/wm/panels/panel_layout_manager.h
+++ b/ash/wm/panels/panel_layout_manager.h
@@ -37,7 +37,7 @@ class Widget;
 }
 
 namespace ash {
-class Launcher;
+class Shelf;
 
 namespace internal {
 class PanelCalloutWidget;
@@ -77,8 +77,8 @@ class ASH_EXPORT PanelLayoutManager
   // Returns the callout widget (arrow) for |panel|.
   views::Widget* GetCalloutWidgetForPanel(aura::Window* panel);
 
-  ash::Launcher* launcher() { return launcher_; }
-  void SetLauncher(ash::Launcher* launcher);
+  Shelf* shelf() { return shelf_; }
+  void SetShelf(Shelf* shelf);
 
   // Overridden from aura::LayoutManager:
   virtual void OnWindowResized() OVERRIDE;
@@ -172,8 +172,8 @@ class ASH_EXPORT PanelLayoutManager
   PanelList panel_windows_;
   // The panel being dragged.
   aura::Window* dragged_panel_;
-  // The launcher we are observing for launcher icon changes.
-  Launcher* launcher_;
+  // The shelf we are observing for shelf icon changes.
+  Shelf* shelf_;
   // The shelf layout manager being observed for visibility changes.
   ShelfLayoutManager* shelf_layout_manager_;